定向斜井套管下入摩阻探讨  

The investigation of directional well running casing friction resistance

作　　者：耿兴[1] 刘春全[1] 

机构地区：[1]西南石油大学,四川成都610500

出　　处：《机械》2008年第S1期1-2,共2页Machinery

摘　　要：套管下入过程中,套管与井壁的摩阻可能会造成套管下入困难,影响油井的正常生产。因此,为高效开发油田,对套管下入摩阻问题进行分析,如果能够事先预测套管下入遇阻位置,并提出防治对策,有着重要意义。定向斜井井壁的弯曲和下入过程中套管柱的变形和受力是力学计算的难点,考虑大斜度井井身参数的实际情况,借用修改的别斯良克公式,由实测大钩载荷反演分段摩擦系数,并对某地区的一口井进行了试算。On the Process of casing running,the friction resistance between casing and sidewall may cause running casing difficultly,and lead to unnormal oil well production.In order to develop oil field high effectively,it’s necessary to analyses the friction problem during casing running.It will be more important meaning if we can predict position where the casing is subjected resistance in advance and put forward control measures.The well flexure of deviated well and casing string's deformation and stress are difficult points of mechanical calculation,this article considers the actual well parameters of highly-deviated well,applying improved formula,to inversely estimate sectional friction coefficient by measuring hook load,and has a trial calculation toward one well from the area.

关 键 词：斜井 套管柱 分段摩擦系数 

分 类 号：TE931.2[石油与天然气工程—石油机械设备]